Report data usage UMA for Chrome services

components/google/core/browser/google_url_tracker.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/google/core/browser/google_url_tracker.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/prefs/pref_service.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_util.h"
 #include "base/thread_task_runner_handle.h"
+#include "components/data_use_measurement/core/data_use_user_data.h"
 #include "components/google/core/browser/google_pref_names.h"
 #include "components/google/core/browser/google_switches.h"
 #include "components/google/core/browser/google_util.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 #include "net/base/load_flags.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_request_status.h"
 
 
 const char GoogleURLTracker::kDefaultGoogleHomepage[] =
@@ skipping 132 matching lines @@
   // specified a Google base URL manually, we shouldn't bother to look up any
   // alternatives or offer to switch to them.
   if (!client_->IsBackgroundNetworkingEnabled() ||
       base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kGoogleBaseURL))
     return;
 
   already_fetched_ = true;
   fetcher_ = net::URLFetcher::Create(fetcher_id_, GURL(kSearchDomainCheckURL),
                                      net::URLFetcher::GET, this);
+  data_use_measurement::DataUseUserData::AttachToFetcher(
+      fetcher_.get(),
+      data_use_measurement::DataUseUserData::GOOGLE_URL_TRACKER);
   ++fetcher_id_;
   // We don't want this fetch to set new entries in the cache or cookies, lest
   // we alarm the user.
   fetcher_->SetLoadFlags(net::LOAD_DISABLE_CACHE |
                          net::LOAD_DO_NOT_SAVE_COOKIES);
   fetcher_->SetRequestContext(client_->GetRequestContext());
 
   // Configure to retry at most kMaxRetries times for 5xx errors.
   static const int kMaxRetries = 5;
   fetcher_->SetMaxRetriesOn5xx(kMaxRetries);
 
   // Also retry kMaxRetries times on network change errors. A network change can
   // propagate through Chrome in various stages, so it's possible for this code
   // to be reached via OnNetworkChanged(), and then have the fetch we kick off
   // be canceled due to e.g. the DNS server changing at a later time. In general
   // it's not possible to ensure that by the time we reach here any requests we
   // start won't be canceled in this fashion, so retrying is the best we can do.
   fetcher_->SetAutomaticallyRetryOnNetworkChanges(kMaxRetries);
 
   fetcher_->Start();
 }